Introducing Workplace by Facebook | Facebook Newsroom

"At Facebook, we’ve had an internal version of our app to help run our company for many years. We’ve seen that just as Facebook keeps you connected to friends and family, it can do the same with coworkers. We started testing a version of Facebook for the workplace with a few other organizations over a year ago.

Now, more than 1,000 organizations around the world use Workplace (formerly known as Facebook at Work). People have created nearly 100,000 groups and the top five countries using Workplace are India, the US, Norway, UK and France. We’re excited by the progress we’ve made and the level of adoption and engagement we’re seeing.

So today we’re announcing that Workplace will now be available to any company or organization that wants to use it."